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Light earthquake: M4 quake has struck near Houma in Tonga

Posted by admin on May 8, 2025 0 Comments

Earthquake location -19.7981S, -177.1626WA light earthquake with magnitude 4 (ml/mb) was reported 246 km NW of Houma, Tonga (153 miles) on Tuesday. The earthquake occurred at a depth of 549.836 km (342 miles) below the earth’s surface. Event id: us7000pw4x. Ids that are associated to the earthquake: us7000pw4x. Exact time and date of event in UTC/GMT: 15/04/25 / 2025-04-15 13:15:48 / April 15, 2025 @ 1:15 pm. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was reported at 13:15:48 / 1:15 pm (local time epicenter). Exact location of earthquake, longitude -177.1626 West, latitude -19.7981 South, depth = 549.836 km.

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been four, in the last 10 days seven, in the past 30 days eleven and in the last 365 days one hundred and five earthquakes of magnitude 3.0 or greater that have been detected nearby.

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 246 km NW of Houma, Tonga. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -177.1626° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -19.7981° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 549.836 km Depth of the event in kilometers.
Place 246 km NW of Houma, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-04-15 13:15:48 Time when the event occurred. UTC/GMT
Updated 2025-05-08 16:12:02 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt The total number of felt reports
CDI The maximum reported intensity for the event.
MMI The maximum estimated instrumental intensity for the event.
Alert Level The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status reviewed Indicates whether the event has been reviewed by a human.
Tsunami 0 This flag is set to "1" for large events in oceanic regions and "0" otherwise. The existence or value of this flag does not indicate if a tsunami actually did or will exist.
SIG 246 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,us, A comma-separated list of network contributors.
Number of Stations Used 17 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 4.666 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.68 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 141 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us7000pw4x Id of event.
Event Code 7000pw4x An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000pw4x, A comma-separated list of event ids that are associated to an event.

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